Description
L-Cysteine hydrochloride
anhydrous, ≥99.0% (RT)
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CAS Number 52-89-1
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Linear Formula HSCH2CH(NH2)COOH · HCl
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Molecular Weight 157.62
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Beilstein Registry Number 3560277
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EC Number 200-157-7
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MDL number MFCD00064553
Properties
assay | ≥99.0% (RT) |
optical activity | [α]20/D +6.4±0.3°, c = 5% in 5 M HCl |
impurities | ≤0.5% foreign amino acids |
ign. residue | ≤0.1% (as SO4) |
loss | ≤1.0% loss on drying |
solubility | H2O: 1 g/10 mL, clear, colorless |
anion traces | sulfate (SO42-): ≤100 mg/kg |
cation traces | Ca: ≤10 mg/kg |
- | Cd: ≤5 mg/kg |
- | Co: ≤5 mg/kg |
- | Cr: ≤5 mg/kg |
- | Cu: ≤5 mg/kg |
- | Fe: ≤5 mg/kg |
- | K: ≤50 mg/kg |
- | Mg: ≤5 mg/kg |
- | Mn: ≤5 mg/kg |
- | NH4+: ≤500 mg/kg |
- | Na: ≤50 mg/kg |
- | Ni: ≤5 mg/kg |
- | Pb: ≤5 mg/kg |
- | Zn: ≤5 mg/kg |